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Re: [Xen-bugs] Traffic issues Dom0 > DomU

To: Konrad Rzeszutek Wilk <konrad.wilk@xxxxxxxxxx>
Subject: Re: [Xen-bugs] Traffic issues Dom0 > DomU
From: "W. Bontekoe - WIPA Nederland B.V." <w.bontekoe@xxxxxxxxx>
Date: Wed, 2 Feb 2011 21:07:40 +0100
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Thread-topic: [Xen-bugs] Traffic issues Dom0 > DomU
As far as i can see now, makes no difference. 

When i create a new VM from the dom0 everything is fine, when i move a
DomU from another Dom0 with the same kernel i get the ping loss.


----------------------
Met vriendelijk groet / Kind regards,
WIPA Nederland B.V. / Information Trends B.V.

Wieger Bontekoe
Tel.: 06 - 24378263

Verzonden vanaf mijn iPhone 4 16GB
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Op 2 feb. 2011 om 21:06 heeft "Konrad Rzeszutek Wilk" <konrad.wilk@xxxxxxxxxx> 
het volgende geschreven:

> On Thu, Jan 27, 2011 at 09:43:25PM +0100, W. Bontekoe - WIPA Nederland B.V. 
> wrote:
>> Yes i did, exactly. But also there i found no changes. Every VM that i move 
>> to this host has the exact same problem though they use seeral 
>> kernals/versions. I compared all VM's, nothing.
>> 
>> I even did a reinstall of the dom0 twice, updated all device drivers (HP 
>> PSP) .. Nothing.
> 
> What happens if you modify the size of the ping? Say ping -s80 or ping -s2000 
> does it work better or worst?
> 
>> 
>> Its really a problem on the Xen bridge (peth0), even in NAT mode.... 
>> 
>> 
>> ----------------------
>> Met vriendelijk groet / Kind regards,
>> WIPA Nederland B.V. / Information Trends B.V.
>> 
>> Wieger Bontekoe
>> Tel.: 06 - 24378263
>> 
>> Verzonden vanaf mijn iPhone 4 16GB
>> ----------------------
>> Op al onze producten en diensten zijn onze algemene voorwaarden van 
>> toepassing.
>> ----------------------
>> This email and any files transmitted with it are confidential and intended
>> solely for the use of the individual or entity to whom they are addressed.
>> If you have received this email in error please notify the system manager.
>> This message contains confidential information and is intended only for the
>> individual named.
>> 
>> If you are not the named addressee you should not disseminate, distribute or
>> copy this e-mail. Please notify the sender immediately by e-mail if you have
>> received this e-mail by mistake and delete this e-mail from your system.
>> 
>> If you are not the intended recipient you are notified that disclosing,
>> copying, distributing or taking any action in reliance on the contents of 
>> this
>> information is strictly prohibited.
>> 
>> Op 27 jan. 2011 om 21:40 heeft "Konrad Rzeszutek Wilk" 
>> <konrad.wilk@xxxxxxxxxx> het volgende geschreven:
>> 
>>>> When i ping from the dom0 to the domU:
>>>> 
>>>> --- XX.XX.XX.9 ping statistics ---
>>>> 19 packets transmitted, 12 received, 36% packet loss, time 18021ms
>>>> rtt min/avg/max/mdev = 0.032/0.181/1.794/0.486 ms
>>>> 
>>>> This means that it drops a lot of connections and this domU seriously can't
>>>> function like this. I've never seen this on any of our other Xen servers so
>>>> this one is really bugging me.
>>>> 
>>>> Anybody else had this problem before? The log is not showing anything (no
>>>> errors or faults)
>>> 
>>> You tried the usual assortment of turning gso/tso/whatnot on/off? Look
>>> in the xen-devel mailing list for the proper commands.
>>> 
>>> 
>> 
> 
> 



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